Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method for metal organic framework ZIF (zeolitic imidazolate framework)-9 membrane for gas separation

A metal-organic framework, ZIF-9 technology, used in semi-permeable membrane separation, chemical instruments and methods, membrane technology, etc., can solve the problems of insufficient dense film, shorten synthesis time, etc., and achieve the effect of good properties

Active Publication Date: 2015-11-11
BEIJING UNIV OF CHEM TECH
View PDF4 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage of the seed crystal method is that the synthesis time is shortened, and the thickness of the film layer and the microstructure of the crystal can be better controlled, and the reproducibility is good, but the prepared film is still not dense enough, and there are still defects.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method for metal organic framework ZIF (zeolitic imidazolate framework)-9 membrane for gas separation
  • Preparation method for metal organic framework ZIF (zeolitic imidazolate framework)-9 membrane for gas separation
  • Preparation method for metal organic framework ZIF (zeolitic imidazolate framework)-9 membrane for gas separation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A preparation method for ZIF-9 film, comprising the following steps:

[0021] 1. α-Al 2 o 3 Modification of the substrate: the porous α-Al 2 o 3 One side of the substrate was polished to smooth with 1500-mesh sandpaper, and ultrasonically cleaned with a large amount of deionized water until the deionized water was clear, so as to remove fine debris remaining on the surface of the substrate. Then the porous α-Al 2 o 3 Soaking the substrate in 25% sodium hydroxide solution for 24 hours can remove surface impurities on the one hand, and increase the concentration of hydroxyl groups on the other hand, which is beneficial to the growth of the MOF film. The treated substrate is treated with deionized water to be neutral: first, ultrasonically 10 times in a digitally controlled ultrasonic cleaner, each time for 8 minutes, with a power of 200W; then boil 3-4 times in boiling water until the measured pH is close to 7. Afterwards, the substrate was placed in a drying oven ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A preparation method for a metal organic framework ZIF (zeolitic imidazolate framework)-9 membrane for gas separation belongs to the field of material synthesis. The preparation method comprises: firstly modifying a porous alpha-Al2O3 carrier by using 3-aminopropyl-trimethoxysilane, wherein the carrier and the ZIF-9 membrane can be better connected together; and secondly, putting the modified carrier in mother liquor for synthesizing the ZIF-9 membrane, firstly raising the reaction temperature to 80 DEG C at a certain rate and maintaining the temperature for a period of time, raising the reaction temperature to 130 DEG C at a certain rate and maintaining the temperature for a period of time, and finally reducing the reaction temperature to room temperature, wherein the ZIF-9 membrane is synthesized. The membrane has a continuous, uniform and compact structure and represents a good gas separation performance.

Description

technical field [0001] The invention belongs to the field of material synthesis, in particular to a metal organic compound for gas separation [0002] Preparation method of organoframework ZIF-9 membrane. Background technique [0003] Metal Organic Frameworks (MOFs) materials are mainly multidimensional periodic network frameworks formed by the connection of organic ligands containing oxygen or nitrogen elements and transition metal ions. At present, a large number of MOFs have been synthesized, some of which have high porosity, high specific surface area, good chemical stability and thermal stability. Due to the variable size of the framework and the corresponding chemical modification according to the target requirements, MOFs have a wider range of uses than other porous materials, such as separation, selective catalysis, gas storage, gas adsorption, photoelectric materials and magnetic materials, biochemical and pharmaceuticals, etc. [0004] Imidazole-based metal-orga...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B01D71/06B01D67/00B01D69/02
Inventor 仲崇立黄玉垚刘大欢
Owner BEIJING UNIV OF CHEM TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com